import matplotlib.pyplot as plt

def annotate_axes(ax, text, fontsize=18):
    ax.text(x=0.5, y=0.5, z=0.5, s=text,
            va="center", ha="center", fontsize=fontsize, color="black")

# (view, (elev, azim, roll))
views = [( 'XY', ( 90, -90, 0)), 
         ( 'XZ', (  0, -90, 0)),  
         ( 'YZ', (  0,   0, 0)), 
         ('-XY', (-90,  90, 0)), 
         ('-XZ', (  0,  90, 0)),
         ('-YZ', (  0, 180, 0))]

layout = [['XY', '.',  'L',  '.'],
          ['XZ','YZ','-XZ','-YZ',],
          ['.',  '.','-XY',  '.',]]
fig, axd = plt.subplot_mosaic(layout, subplot_kw={'projection': '3d'})
for i in range(len(axd) - 1):
    plane = views[i][0]
    axd[plane].set_xlabel('x')
    axd[plane].set_ylabel('y')
    axd[plane].set_zlabel('z')
    axd[plane].set_proj_type('ortho')
    axd[plane].view_init(elev=views[i][1][0], azim=views[i][1][1], roll=views[i][1][2])

    label = f'{plane}\n{views[i][1]}'
    annotate_axes(axd[plane], label, fontsize=14)

label = 'matplotlib Axes3D Primary View Planes\nax.view_init(elev, azim, roll)'
annotate_axes(axd['L'], label, fontsize=18)
axd['L'].set_axis_off()
plt.tight_layout()